PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/05-13:13:10
G01     229.5          20.0                6.4 +/-    1.23      14.1 +/-    1.23  0.060 / 0.090
G03     293.4          66.9                6.1 +/-    1.07       6.6 +/-    1.07  0.050 / 0.090
G14     80.9           30.3                7.5 +/-    1.06      13.1 +/-    1.06  0.060 / 0.160
G16     148.2          41.9                8.9 +/-    0.60      12.6 +/-    0.60  0.060 / 0.170
G22     210.0          72.1                8.9 +/-    0.28       9.3 +/-    0.28  0.030 / 0.050
G23     307.3          38.9                4.8 +/-    0.77       7.1 +/-    0.77  0.030 / 0.050
G26     101.5          52.9                8.5 +/-    0.52      10.4 +/-    0.52  0.100 / 0.150
G31     44.4           33.7                4.8 +/-    0.60       7.8 +/-    0.60  0.110 / 0.180